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Salesforce Certified JavaScript Developer (JS-Dev-101) Sample Questions (Q54-Q59):

NEW QUESTION # 54
At Universal Containers, every team has its own way of copying JavaScript objects. The code snippet shows an Implementation from one team:

What is the output of the code execution?

A. Hello John Doe
B. SyntaxError: Unexpected token in JSON
C. Hello Dan
D. Hello Dan Doe

Answer: B

NEW QUESTION # 55
The developer has a function that prints "Hello" to an input name. To test this, thedeveloper created a function that returns "World". However the following snippet does not print " Hello World".

What can the developer do to change the code to print "Hello World" ?

A. Change line 9 to sayHello(world) ();
B. Change line 2 to console.log('Hello' , name() );
C. Change line 5 to function world ( ) {
D. Change line 7 to ) () ;

Answer: B

NEW QUESTION # 56
Refer to the code below?
Let searchString = ' look for this ';
Which two options remove the whitespace from the beginning of searchString?
Choose 2 answers

A. searchString.trimEnd();
B. searchString.trimStart();
C. trimStart(searchString);
D. searchString.replace(/*\s\s*/, '');

Answer: B,D

NEW QUESTION # 57
A developer creates a simple webpage with an input field. When a user enters text in
the input field and clicks the button, the actual value of the field must be displayed in the
console.
Here is the HTML file content:
<input type =" text" value="Hello" name ="input">
<button type ="button" >Display </button>
The developer wrote the javascript code below:
Const button = document.querySelector('button');
button.addEvenListener('click', () => (
Const input = document.querySelector('input');
console.log(input.getAttribute('value'));
When the user clicks the button, the output is always "Hello".
What needs to be done make this code work as expected?

A. Replace line 04 with console.log(input .value);
B. Replace line 03 with const input = document.getElementByName('input');
C. Replace line 02 with button.addEventListener("onclick", function() {
D. Replace line 02 with button.addCallback("click", function() {

Answer: A

NEW QUESTION # 58
Given the code below:

What happens when the code executes?

A. The ur1 variables has local scope and line 02 throws an error.
B. The ur1 variable has global scope and line 02 throws an error.
C. The ur1 variable has local scope and line 02 executes correctly.
D. The ur1 variable has global scope and line 02 executes correctly.

Answer: D

NEW QUESTION # 59
......

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